.container {
    background-color: #414141;
    font-size: 20px;
    display: flex;
    flex-direction: row;
    height: 800px;
}
.main {
    background-color: #7ec0e4;
    flex-grow: 1;
}

.sidebar {
    background-color: #ffff9d;
    display: flex;
    flex-direction: column;
    flex-basis: 150px;
}